Truffle mycelia exhibit a complex interaction pattern with host plants and have been extensively studied over the last years as a source of new bioactive compounds. Fungal enzymes possess a wide use in food industry, ...Truffle mycelia exhibit a complex interaction pattern with host plants and have been extensively studied over the last years as a source of new bioactive compounds. Fungal enzymes possess a wide use in food industry, confectionaries, textiles and leather industries in order to simplify the processing of raw materials. They are often more stable than enzymes derived from other sources. Tuber maculatum and Tuber aestivum mycelia were tested for enzymes production in Petri dishes solid medium conditions. The results showed that Tuber maculatum produced seven extracellular enzymes (amylase, xylanase, laccase, lipase, peroxidase, cellulase and catalase) while Tuber aestivum produced only three enzymes (amylase, peroxidase and catalase).展开更多
Tuber aestivum/uncinatum has been widely used as food, food additives, and traditional medicine. Truffles are extremely perishable with a short postharvest life quality requiring a special handling for marketing in or...Tuber aestivum/uncinatum has been widely used as food, food additives, and traditional medicine. Truffles are extremely perishable with a short postharvest life quality requiring a special handling for marketing in order to delay its deterioration. This study aimed to assess the effects of different sanitizing methods on superficial Tuber aestivium quality ascocarp. The results showed that the best treatment was obtained by immersing the Truffle ascocarps in boiling water for 1 or 2 min where counts of total mesophilic microoraganisms (TMM) were respectively 81 and 7 CFU per g of dry Truffle ascocarps biomass, respectively. However, the highest TMM was obtained after rinsing Truffle ascocarps in 2% NaOH where recovery was 108 CFU per g of dry Truffle ascocarps biomass. Treatments applied to disinfect Truffle ascocarps were classified by increasing degree of efficiency as follows to reduce the microbial load expressed in CFU/g: Dipping in boiling water (2 min) 7 ± 3.41;dipping in boiling water (1 min) 81 ± 25.8, rinsing with alcohol 2.102 ± 13;rinsing with tap water 6.103 ± 36;rinsing with H2O2 6.104 ± 2;brushing 2.105 ± 28 and rinsing with NaOH 108 ± 15.展开更多
文摘Truffle mycelia exhibit a complex interaction pattern with host plants and have been extensively studied over the last years as a source of new bioactive compounds. Fungal enzymes possess a wide use in food industry, confectionaries, textiles and leather industries in order to simplify the processing of raw materials. They are often more stable than enzymes derived from other sources. Tuber maculatum and Tuber aestivum mycelia were tested for enzymes production in Petri dishes solid medium conditions. The results showed that Tuber maculatum produced seven extracellular enzymes (amylase, xylanase, laccase, lipase, peroxidase, cellulase and catalase) while Tuber aestivum produced only three enzymes (amylase, peroxidase and catalase).
文摘Tuber aestivum/uncinatum has been widely used as food, food additives, and traditional medicine. Truffles are extremely perishable with a short postharvest life quality requiring a special handling for marketing in order to delay its deterioration. This study aimed to assess the effects of different sanitizing methods on superficial Tuber aestivium quality ascocarp. The results showed that the best treatment was obtained by immersing the Truffle ascocarps in boiling water for 1 or 2 min where counts of total mesophilic microoraganisms (TMM) were respectively 81 and 7 CFU per g of dry Truffle ascocarps biomass, respectively. However, the highest TMM was obtained after rinsing Truffle ascocarps in 2% NaOH where recovery was 108 CFU per g of dry Truffle ascocarps biomass. Treatments applied to disinfect Truffle ascocarps were classified by increasing degree of efficiency as follows to reduce the microbial load expressed in CFU/g: Dipping in boiling water (2 min) 7 ± 3.41;dipping in boiling water (1 min) 81 ± 25.8, rinsing with alcohol 2.102 ± 13;rinsing with tap water 6.103 ± 36;rinsing with H2O2 6.104 ± 2;brushing 2.105 ± 28 and rinsing with NaOH 108 ± 15.
